Wonder why the name TB-mag? It stands for Thrust Balanced Mag-Drive. Thrust balancing is not new to the pump industry but it certainly is new to the non-metallic mag-drive world!
Nearly every competing product in the market today is based on thrust forward technology. This is the concept where under normal operation the impeller will thrust forward towards the pump suction. As an old design (more than 50 years) it has found a niche in the clean liquids market but is well known to fail easily upon process upset or system change.
The revolution of thrust balancing has added substantial durability along with wider and greater application of use. Those who deal in day-to-day reliability truly understand the
destruction that thrust can cause. For those looking for a product that will last longer and run better, the TB-mag is certainly what you should consider! As you read, please understand that this is a “simple” explanation of what Innovative Mag-Drive has created. For an in-depth explanation, please call your local distributor and schedule a demonstration.
Thrust... this is where it starts! Engineers explain that thrust is one of several forces in a mag-drive pump and it can be very destructive. When you think of a pump, the largest cause of force is from the very thing you want the pump to do, make pressure. When engineers see pressure, they see it as a Force, which is Pressure x Area (F = P x A). When INNOMAG looked at the inside of a pump, we saw a lot of unused pressure and unused areas that could solve a 50 year problem!
The picture to the upper left corner shows what INNOMAG created and patented. The white arrows show the path that some of your liquid will take when it goes through the TB-mag pump. The idea to keep in mind at all times is that high pressure (colored red) will always find low pressure (colored yellow). A good example is a balloon that you blow up and let go of. The air comes out because pressure inside the balloon is higher than outside. The top left picture shows that the suction side (left side) of the pump has the lowest pressure (colored yellow). The discharge will have the highest pressure (colored red). When the arrows are followed, the path traveled is: liquid enters the suction of the pump and the center of the impeller. The impeller then centrifugally creates pressure with the liquid (red colored area). As the pump housing is filled with the pressurized liquid, some of the liquid will go around to the back side of the impeller and pass thru the back clearance ring set (picture upper right side). This area is fixed and creates a constant, restricting pressure drop (red color changing to green color). From here, the liquid will pass over the impeller (the magnet assembly) and go around to the impeller back end (balancing pressure). At this point, it will travel through the center of the impeller (green area again) and find the suction (the low pressure area). Why? High pressure will always go to low pressure (just like the balloon)!
Looking at the picture located just above, we find that a way to thrust balance the impeller is to simply combine the suction pressure and the pressure on the front of the impeller to go agai
nst the pressure (an
d thrust) from the back of the impeller (the green area). If the impeller moves forward due to thrust (picture lower left corner) an opening controlled by the impeller becomes larger and allows more liquid to leave the green area, directly lowering the thrust and pressure. If too much thrust or pressure is lost, the impeller will move backward, closing the opening (picture lower right corner) causing the pressure or thrust in the green area to directly increase against the suction and front impeller pressures.
This is INNOMAG dynamic thrust balancing, the ultimate simplicity is that your process and the TB-mag pump work together to eliminate thrust!
